Navegando por Assunto "Cerâmica vermelha"
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Item Acesso aberto (Open Access) Alternativas para o abastecimento energético dos fornos de indústrias cerâmicas localizadas no município de São Miguel do Guamá-PA(Universidade Federal do Pará, 2013-08-14) ROCHA, Alexander Lobo; NEVES, Renato Martins das; http://lattes.cnpq.br/6538317425557058Economic and environmental differentials incorporated biomass energy has driven the spread of supply and use of biofuels in developed and developing countries. In the state of Pará (Brazil), the growing demand for biomass like acai lump and legalized firewood, specially related to the performance of the ceramic industry in the São Miguel do Guamá county and other industrial segments, pints to a possible shortage of these energy resources. Thus, initiative is needed to search for alternative fuels that are capable of not only ensuring the energy supply necessary for the current and future ceramic production of these industries, but also to ensure the continuation and conservation of renewable natural resources in the region. This work consolidates research among member companies of the Association of Ceramics Industries of São Miguel do Guamá, which are located in this municipality, using as a sample the ceramic companies seeking alternative bioenergy, along with the research among the agro-industries and farmers present in other municipalities of the state of Pará. The objective is to identify alternatives for energy supply in ceramic kilns, considering the use of renewable energy sources and opportunities for reducing the cost of its acquisition through the practice of return shipping. It was used as a research strategy case study in five moments of semi-structured interviews guided by questionnaires. The results obtained indicate that there is opportunity to supply biomass matched with the needs of the surveyed ceramic companies, with the potential to meet repressed energy demands and allowing the continuation of strategic business in Pará, as at this time, the growing civil construction industry.Item Acesso aberto (Open Access) Análise das propriedades tecnológicas da cinza do caroço de açaí na cerâmica vermelha(Universidade Federal do Pará, 2019-09-16) FERREIRA, Taiana da Silva; SOUZA, Paulo Sérgio Lima; http://lattes.cnpq.br/4933212993218783; ISHIHARA, Júnior Hiroyuki; http://lattes.cnpq.br/3498874642887006; https://orcid.org/0000-0002-0081-7913The raw materials from the exploration of deposits used for the manufacture of products used in construction and the environmental impacts caused by the red ceramic sector evolved as cities developed. The need for the use of alternative materials, such as waste biomass, has become increasingly necessary studies aimed at the reuse of waste in the process of production and manufacture of ceramic materials. Thus, this work has the objective of evaluating the incorporation of ash from the acai kernel residue (RCA) in the clay mass and to evaluate the technological properties of red ceramic. The materials were chemically and physically characterized, and then extruded specimens were molded using 0%, 10%, 15% and 20% RCA ash mixed in two types of clay, called red clay and dark clay. After firing at 950 ºC, the pieces were subjected to water absorption, apparent porosity, specific gravity, linear shrinkage and flexural strength stress tests. The results showed that the use of RCA ash contributed to the workability of the mixtures, reducing the need for additional water for molding. It was also verified that the 10% ash content as a partial substitute of red clay, and the mass containing 50% of red clay and 50% of dark clay, had a positive influence on the evaluated technological properties. However, for the 20% ash incorporation of RCA, the values were median and for the unsatisfactory porosity assay. Thus, it was possible to verify the technical feasibility of using açaí stone ash in partial substitutions, contributing to the reduction of raw material exploration, reduction of solid waste disposal and the reuse of the residual biomass of açaí stone in the production of ceramic materials.Item Acesso aberto (Open Access) Avaliação das características físicas, químicas e mineralógicas da matéria-prima utilizada na indústria de cerâmica vermelha nos municípios de Macapá e Santana-AP(Universidade Federal do Pará, 2008-09-30) SOUTO, Flávio Augusto França; ANGÉLICA, Rômulo Simões; http://lattes.cnpq.br/7501959623721607The activity ceramic of the State of Amapá still it presents very incipient, not managing to attend the market local. Among the main hindrances diagnosed, we can cite the next: 1) problems in the rental of lain new; 2) ignorance of the physical, chemical and mineralogical characteristics of the raw material (clay); 3) the lack of technical criteria in the raw material extraction. The work goals are: 1) Do the rising, register and to study clays main occurrences geological context for red pottery of the state of Amapá, the which ones are concentrate in the municipal districts surroundings of Macapá and Santana; 2) In occurrences selected, evaluate the chemical and mineralogical characteristics of the raw material, besides the technological-potteries properties, through which wishes the products improvement of red pottery (bricks and tiles). The work was developed in the area that embraces Macapá's Municipal districts and Santana in Amapá, limited by the latitudes (0º0’30”S and 0º3’30”S) and longitudes (51º12’30”W and 51º5’30”W), where are located the biggest numbers of ceramic of the State. The used materials in this work are coming of clays seized by 4 ceramic: Calandrine (CA) and Amapá Telhas (AT)(Macapá); União (U) and Fortaleza (F) (Santana), besides one regarding Corte de Estrada (CE) in Elesbão's District in Santana's Municipal district, representative sample of the Formation Barreiras. In the total were used 12 samples of the 5 cited places, distributed in profiles with average depth of 2,3 m. The methodology constituted in weigh 1 kg of brute sample, drying itself to 50ºC in stove, disintegrating and homogenizer the same. After this initial treatment, separate in four equal parts, it was separating 500 g for file and the remaining for analysis granulometric. Of the fraction clay it accomplished X-ray diffraction analysis (XRD), differential thermal analysis (DTA), thermogravimetric analysis (TGA), espectroscopy in the region of the infrared with transformed of Fourier (spectrums FTIR), chemical analysis (SiO2, Fe2O3, Al2O3, TiO2, CaO, Na2O, K2O, MgO and loss to the fire). For the technological rehearsals they used rules ABNT and were made bodies of proofs of 6x2x0,5cm to determination of the following parameters: color, water absorption (WA) , apparent porosity (AP), linear shrinkage (LS), apparent density (AD), Flexural Strenght (FS), liquidity limit (LL), plasticity limit (PL) and plasticity index (PI). The data obtained through the chemical analysis show great quantity of SiO2, Al2O3 + H2O, associates to the quartz and kaolinite. Values of Fe2O3, TiO2 suggest refractory and changes reduction in the coloration when burnt to 950ºC, besides being linked to the accessory minerals goethite, anatase and hematite. That was observed CaO and MgO are elements that drop for refractory and linked for montmorollonite and muscovite. Already Na2O and K2O, are fundentes important in vitrification process. For X-ray diffraction, thermal analysis and espectroscopy in the region of the infrared revealed the presence of the following minerals: quartz, illite, kaolinite, esmectite (montmorillonite), goethite, anatase. Clays rehearsed characterize for present elevated plasticity with plasticity index (PI) >15% and fraction silte high percentage. The water absorption measures, apparent porosity, lineal retraction and rupture tension to the inflection after burning in oven in the temperatures of 950ºC and 1050ºC, they presented values adequate for clays use in industry of red pottery. According to the measures obtained in the technological-ceramic rehearsals for the bodies of proofs burnt in the temperatures of 950ºC and 1050ºC, they contacted the next applications in clays studied: 1) Burning temperature to 950ºC - For masonry bricks 10 samples served (U-01, U-02, U-03, F-01, F-02, AT-01, AT-02, CA-01, CA-02, CA-03); for structural bricks 8 samples served (U-01, U-02, U-03, F-01, F-02, AT-02, CA-01, CA-03); and for tiles just 5 samples they presented inside the standards (U-01, U-03, F-02, F-01, AT-02). 2) Burning temperature to 1050ºC - 10 samples they presented inside the standards demanded for tiles production, masonry bricks and structural (U-01, U-02, U-03, F-01, F-02, AT-01, AT-02, CA-01, CA-02, CA-03).Item Acesso aberto (Open Access) Avaliação do uso de lodos de estação de tratamento de água como matéria-prima na confecção de tijolos cerâmicos: estudo de caso - ETA Bolonha(Universidade Federal do Pará, 2009-06-26) MULLER, Elzelis de Aguiar; LIMA, Alberto Carlos de Melo; http://lattes.cnpq.br/0524669127885256; MACHADO, Luiza Carla Girard Teixeira; http://lattes.cnpq.br/9773700229115395This study aimed to evaluate the possibility of incorporating the sludge in the water treatment station of Bolonha (RMB), in the manufacture of ceramic bricks for use in construction. Two units of flow of mud (UDL) were established and operationalized in the ETA Bolonha. Before the preparation of ceramic bricks, the mud flows were ETA Bologna in UDL's that were equipped with open collar, and then were characterized physically and mineralogically. The sludge was added to the ceramic body of a local industry for the production of bricks. Various proportions of silt and clay mixture were tested in order to find the appropriate proportion to the production of ceramic bricks (10%, 12% and 20% of sludge in the ceramic body ETA). Laboratory tests were conducted to assess its strength, water absorption, an appropriate size and visual appearance. It was not possible to incorporation of 20% of mud to ceramic body due to the high plasticity and the difficulty of manufacture of ceramic bricks, however, the proportions of 10% and 12% of sludge from ETA were the ones that had better results on the parameters of resistance, indicating that the ceramic bricks can be produced with the incorporation of up to 12% of sludge from ETA.Item Acesso aberto (Open Access) Estudo da influência da incorporação dos resíduos de caulim nas propriedades tecnológicas de cerâmica marajoara para obtenção de tijolo ecológico(Universidade Federal do Pará, 2025-07-30) BRITO, Fabio Moreira; CÂNDIDO, Verônica Scarpini; http://lattes.cnpq.br/8274665115727809; https://orcid.org/0000-0002-3926-0403; MONTEIRO, Sérgio Neves; http://lattes.cnpq.br/2962183322412029; https://orcid.org/0000-0003-1208-1234The effects of global climate change are occurring at an unprecedented pace. For this reason, human activities urgently require a paradigm shift to halt this entropic process before the consequences become irreversible. In this context, the use of highly eco-efficient materials aims to conveniently neutralize CO₂. This study aims to incorporate Kaolin waste—KDI (clayey) and KAI (sandy)—into the properties and microstructures of clay mass, assessing its mechanical strength after firing at temperatures of 750 and 950 °C. Within this framework, six formulations were tested, varying from 0% to 50% kaolin waste. The specimens were uniaxially pressed into cylindrical shapes and then subjected to firing at 750 °C and 950 °C for 2 hours at peak temperature. The raw materials underwent tests that provided a comprehensive characterization of their properties, such as X-ray diffraction (XRD), X-ray fluorescence (XRF), optical microscopy (OM), scanning electron microscopy (SEM), and laser diffraction techniques (LD). After mixing and forming the materials into test specimens with different compositions, they were uniaxially pressed in cylindrical molds and subjected to compression testing. The results demonstrated the feasibility of using these wastes, showing favorable outcomes for their incorporation into red ceramics for the production of ceramic products in compliance with current standards.Item Acesso aberto (Open Access) Modelo de simulação computacional para balanceamento de linhas de produção das empresas cerâmicas de São Miguel do Guamá: um estudo de caso(Universidade Federal do Pará, 2013-10-16) SILVA, Denilson Costa da; ICHIHARA, Jorge de Araújo; http://lattes.cnpq.br/5726366418302065This work is to present a computer simulation model for the purpose of solving the problem of balancing production lines of a factory belonging to the polo red ceramic potter-ceramic São Miguel of Guama. In this sense, it is initially performed a literature search on the discrete event systems, the methods of solution for line balancing and concepts involving the modeling and simulation. The methodology addresses the case study, which is conducted by the method proposed by Chwif (1999) in which covers three (03) macros stages in conducting a simulation project, whether the stage of design, implementation and analysis stage. With the computational model developed based on the current characteristics of the production line, one can describe the current state of the process, identify the problem operation as well as forward proposals for improvements from the construction of 03 scenarios. Where the third scenario presented the best results and, therefore, being the representative model of the balancing. At the end, it is understood as the main contributions of this work even bringing into the university experience of the practical application of simulation involving a ceramic industry of São Miguel of Guama and offer the industry of this region a potential tool for improving their processes productive.Item Acesso aberto (Open Access) Qualidades intrínsecas para inovação de produtos em piso e revestimento de cerâmica vermelha do APL de São Miguel do Guamá(Universidade Federal do Pará, 2008) MENDES, Adriana de Nazaré Moraes Mendes de; ICHIHARA, Jorge de Araújo; http://lattes.cnpq.br/5726366418302065This dissertation represents a contribution in solving the problem of innovation of products in the red ceramic industry in São Miguel do Guamá, state of Pará. It is a methodology, based on the strategy of QFD (Quality Function Deployment) which combines the requirements of consumers in the preparation of the product designs and production processes. The lack of knowledge of products or services to be sold is a major (and obvious) reasons for the failure of small retailers and services. In the current level of competitiveness, information is the key to business success and adapt to the market, not only to obtain and collect this information, but also to learn to interpret them and use them properly and in a creative way. The product quality is assessed both in terms of internal (technical) and the external aspect (quality required by customers). Research shows, in addition to the living reality of the industry of ceramics industries, the importance and attributes of quality defined by consumers on the red tiles. The work also shows the application of a methodology for companies in the sector through unfolding of the required quality, the quality is down planned.